Calls for a review into knife crime tactics have been made after 10 people were stabbed in Lewisham and Greenwich in the last month.

The killing of 18 year-old Nathan Murray in Sydenham last week was just one of 10 knife crimes in Lewisham and Greenwich between May 4 and June 1, with at least eight of the victims thought to be aged between 16 and 23.

Across London there has been a 21 per cent rise in the number of knife crime victims under 25 in the last year.

London Assembly member Len Duvall has called on the Metropolitan Police to review how they tackle knife crime with spikes expected during the summer months.

He said: "We need urgent action from the Mayor and the police to address this sorry situation and that means a thorough investigation into why stabbings appear to be on the rise.

"It is incredibly sad to see so many young lives affected by these inexcusable acts and my thoughts are of course with the victims and their families."

Metropolitan Police commissioner Sir Bernard Hogan Howe conceded at a meeting of London Assembly's Police and Crime Committee that injuries from knife crime had gone up and this was worrying.

A Mayor's Office for Policing and Crime spokeswoman said: "Tackling knife crime remains an absolutely key priority for the Metropolitan Police and the Mayor, and any local increases in instances of knife crime will be targeted by the Met.

"They will continue to carry out a wide range of operational and crime prevention activities as part of an ongoing drive to reduce this offence."

On May 31, a group of around 50 youths took to the streets of Hither Green following a stabbing at a 16th birthday party, with witnesses describing the scene as a 'war zone'.